Dental composition, preparation method thereof, gutta-percha point and preparation method of gutta-percha point

Abstract

The invention relates to the field of dental root canal filling, and particularly discloses a dental composition, a preparation method thereof, a gutta-percha point and a preparation method of the gutta-percha point. The dental composition comprises the following raw materials: turquoise gum, polypropylene and simethicone. The preparation method comprises the following steps: S1, mixing the ancient glue and the polypropylene at the mixing temperature of 80-100 DEG C and the rotating speed of 30-60 r / min for 30-60 minutes to obtain a colloid; s2, adding the rest raw materials into the colloid, and continuously mixing to obtain the dental composition. According to the gutta-percha tip, the polypropylene and the simethicone are added into the gutta-percha, and the low-melting-point polypropylene with relatively good biocompatibility is adopted to replace part of the gutta-percha, so that compared with a common gutta-percha tip which generally contains about 20% of gutta-percha, the gutta-percha tip properly reduces the proportion of the gutta-percha, and meanwhile, under the action of the simethicone, the flowability and the viscosity of the gutta-percha tip are improved; the gutta-percha point is beneficial to adopting an injection molding process, the yield can be improved, the quality is improved, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of dental root canal filling, and more particularly, to a dental composition, a preparation method thereof, a gutta-percha point and a preparation method of the gutta-percha point. Background Art

[0002] After the tooth root canal is cleaned and disinfected, it is necessary to fill the root canal cavity with filling materials. The filling material is usually gutta-percha, such as Figure 1 As shown in the figure, since the dimensional stability of non-injection molded gutta-percha tips is poor, and the injection molded gutta-percha tips have a very great advantage in dimensional stability, the use of injection molded gutta-percha tips may become the future development direction.

[0003] Traditional gutta-percha tips are typically made of gutta-percha, barium sulfate, zinc oxide, an inert filling material, and a colorant. Due to gutta-percha's high viscosity and low fluidity, the gutta-percha tip material exhibits poor fluidity after heating. This results in poor fluidity during injection molding, making the tip difficult to manufacture. Furthermore, the tip easily adheres to the mold during injection molding, making demolding difficult. Summary of the Invention

[0004] In order to solve the problem of difficulty in injection molding of gutta-percha tips, the present application provides a dental composition, a preparation method thereof, a gutta-percha tip and a preparation method of the gutta-percha tip.

[0005] In a first aspect, the present application provides a dental composition, which adopts the following technical solution:

[0006] A dental composition comprises the following raw materials: gutta-percha, polypropylene and dimethyl silicone oil.

[0007] By adopting the above technical solution, gutta-percha is a natural rubber that is the basic component of gutta-percha tips. It also has good biocompatibility and can combine various raw materials together. The gutta-percha tips on the market do not contain polypropylene and dimethyl silicone oil. This application adds polypropylene and dimethyl silicone oil to gutta-percha, and uses low-melting-point polypropylene with good biocompatibility to replace part of the gutta-percha. Compared with the commonly used gutta-percha tips that usually contain about 20% gutta-percha, the proportion of gutta-percha is appropriately reduced. At the same time, under the action of dimethyl silicone oil, the fluidity and viscosity of the gutta-percha tips are improved, making the gutta-percha tips conducive to the use of injection molding technology, which can increase production, improve quality and reduce costs.

[0008] Preferably, the dental composition comprises the following raw materials in parts by weight:

[0009] 5-15 parts gutta-percha

[0010] Polypropylene 5-25 parts

[0011] 1-5 parts of dimethyl silicone oil.

[0012] Preferably, the dental composition comprises the following raw materials in parts by weight:

[0013] 5-10 parts gutta-percha

[0014] Polypropylene 15-25 parts

[0015] 3-5 parts of dimethyl silicone oil.

[0016] Preferably, the raw materials further comprise 4-11 parts by weight of an inert filler, and the inert filler is talc, silicon dioxide or calcium carbonate.

[0017] By employing this technical solution, the inert filler increases the melt fluidity and hardness of the dental composition. The inert material combined with polypropylene enhances the flowability of the dental composition, further improving the performance of the gutta-percha tip. Furthermore, the addition of polypropylene reduces the proportion of inert filler, thereby alleviating issues such as abnormal periapical pressure and tooth structure damage caused by excessive inert filler.

[0018] Preferably, the raw materials further include 40-65 parts by weight of zinc oxide.

[0019] By adopting the above technical solution, the role of zinc oxide is filling and sterilization, and it is used as a filler and antibacterial agent to enhance the stability and sealing of the material.

[0020] Preferably, the raw materials further include 5-20 parts by weight of barium sulfate.

[0021] By adopting the above technical solution, the role of barium sulfate is to assist in imaging when taking X-ray films. After addition, the developing property of the material is enhanced, making it easier to check the filling effect through X-ray.

[0022] Preferably, the raw materials further include 0.5-3.5 parts by weight of color powder.

[0023] By adopting the above technical solution, the color powder in the dental composition optimizes clinical operation efficiency and improves patient adaptability through the dual mechanisms of color coding and psychological suggestion.

[0024] In a second aspect, the present application provides a method for preparing a dental composition, using the following technical solution:

[0025] The method for preparing the dental composition described in the above scheme comprises the following steps in order according to the processing steps:

[0026] S1: mixing gutta-percha and polypropylene at a mixing temperature of 80-100°C, a rotation speed of 30-60 rpm, and a mixing time of 30-60 min to obtain a colloid;

[0027] S2: Add the remaining raw materials to the colloid and continue kneading to obtain a dental composition.

[0028] By adopting the above technical solution and mixing under appropriate steps and conditions, the dental composition obtained not only has the characteristics of high fluidity, low viscosity and high strength, but also has a simple preparation method, convenient operation and readily available raw materials, which is conducive to the industrial production and application of the dental composition.

[0029] In a third aspect, the present application provides a gutta-percha tip, which adopts the following technical solution:

[0030] A gutta-percha point comprises the dental composition described in the above scheme.

[0031] By adopting the above technical solution, the gutta-percha tip of the present application includes the dental composition described in the above solution, so the gutta-percha tip has the high fluidity, low viscosity and high strength of the dental composition.

[0032] In a fourth aspect, the present application provides a method for preparing a gutta-percha tip, using the following technical solution:

[0033] A method for preparing a gutta-percha tip comprises the following steps in order according to the processing procedures:

[0034] The dental composition obtained after mixing is cut into granules, and then added into an injection molding machine, melted by the injection molding machine and injected into a mold, and then cooled and demolded to obtain a tapered gutta-percha tip.

[0035] By adopting the above technical solution, the dental composition is melted and then cooled to reshape to obtain a gutta-percha point. Testing has shown that the gutta-percha point produced in this application not only has high fluidity, low viscosity, and high strength, but also possesses qualified physical properties such as size, taper, physical integrity, and X-ray radiopacity, making it an innovative and unique dental product.

[0036] In summary, this application has the following beneficial effects:

[0037] 1. The present application adds polypropylene and dimethyl silicone oil to gutta-percha, and uses low-melting-point polypropylene with good biocompatibility to replace part of the gutta-percha. Compared with the commonly used gutta-percha tips which usually contain about 20% gutta-percha, the proportion of gutta-percha is appropriately reduced. At the same time, under the action of dimethyl silicone oil, the fluidity and viscosity of the gutta-percha tips are improved, making the gutta-percha tips conducive to the use of injection molding process, which can increase production, improve quality and reduce costs.

[0038] 2. By introducing polypropylene, a plastic with high crystallinity, it has better fluidity after melting, thereby improving the fluidity of the material. In this way, when only small-sized gutta-percha tips are made, more precise sizes can be obtained. Moreover, after the fluidity of the material is improved, the requirements for molds and production equipment can be reduced, which can reduce costs.

[0039] 3. By introducing dimethyl silicone oil, the lubricity of the material is improved, making demolding easier and facilitating the manufacture of gutta-percha products. This can reduce the production time of the product and increase output. The ultimate result is to reduce costs and reduce the probability of mold sticking during production, thereby improving the quality stability of production.

[0040] 4. Polypropylene has a high hardness. By adding polypropylene, the strength of the gutta-percha tip product can be improved, which helps to improve the strength performance of small-sized gutta-percha tips, making it easier for doctors to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The utility model relates to a non-injection-molded gutta-percha point of background technology.

[0042] Figure 2 Every 4cm of Example 4 2 Viscosity test results.

[0043] Figure 3 This is the strength test result of Example 4.

[0044] Figure 4 It is the gutta-percha point prepared in Example 10. DETAILED DESCRIPTION

[0045] The present application is further described in detail below with reference to the accompanying drawings and examples.

[0046] The following are specific examples for illustration. The raw materials in the examples are all purchased from the market, among which:

[0047] The inert filler can be talc, silicon dioxide or calcium carbonate;

[0048] The color powder is made of German BASF K3580 brand pigment red and German BASF K0961HD brand pigment yellow, which are mixed in a ratio of red:yellow=1:5.

[0049] Example

[0050] Example 1 discloses a dental composition comprising the following raw materials: gutta-percha, polypropylene, and dimethicone. The preparation method of the dental composition comprises the following steps in order of processing:

[0051] S1: 5 g of gutta-percha and 25 g of polypropylene were mixed at a mixing temperature of 100°C, a rotation speed of 30 r / min, and a mixing time of 40 min to obtain a colloid;

[0052] S2: The remaining raw materials were added to the colloid according to the weight shown in Table 1 and kneaded continuously to obtain a dental composition.

[0053] Examples 2-6

[0054] Examples 2-6 all disclose a dental composition, which differs from Example 1 in the raw material types, raw material weights, and preparation conditions of the dental composition, as shown in Tables 1 and 2.

[0055] Table 1 Raw material types and raw material weights of dental compositions of Examples 1-6

[0056]

[0057] Table 2 Preparation conditions of dental compositions of Examples 1-6

[0058]

[0059] Examples 7-12

[0060] Examples 7-12 each disclose a gutta-percha tip, using the dental compositions of Examples 1-6, respectively. The method for preparing the gutta-percha tip comprises the following steps in order of processing:

[0061] The dental composition obtained after mixing is cut into granules, and then added into an injection molding machine, melted by the injection molding machine and injected into a mold, and then cooled and demolded to obtain a tapered gutta-percha tip.

[0062] Comparative Example

[0063] Comparative Example 1

[0064] Comparative Example 1 discloses a commercially available gutta-percha tip, the main component of which is gutta-percha and does not contain polypropylene and dimethyl silicone oil.

[0065] Comparative Example 2

[0066] Comparative Example 2 discloses a dental composition, which is different from Example 5 in that the weight of polypropylene is 4 g and the weight of gutta-percha is 16 g.

[0067] Comparative Example 3

[0068] Comparative Example 3 discloses a dental composition, which is different from Example 5 in that the weight of dimethyl silicone oil is 0.5 g and the weight of gutta-percha is 15.5 g.

[0069] Comparative Example 4

[0070] Comparative Example 4 discloses a dental composition, which is different from Example 5 in that the weight of polypropylene is 4 g, the weight of dimethyl silicone oil is 0.5 g, and the weight of gutta-percha is 16.5 g.

[0071] Comparative Example 5

[0072] Comparative Example 5 discloses a dental composition, which is different from Example 5 in that the mixing temperature in S1 is 60°C.

[0073] Comparative Example 6

[0074] Comparative Example 6 discloses a dental composition, which is different from Example 5 in that the mixing temperature in S1 is 110°C.

[0075] Performance testing

[0076] The materials of Examples 1-6 and Comparative Examples 1-6 were tested for fluidity. Test Method: The materials were tested using a melt indexer and method conforming to ASTM D1238, with the melt index set to 10 minutes, 2.5 kg load, and a temperature of 150°C. A higher melt index indicates better material fluidity.

[0077] Table 3 Fluidity test results of Examples 1-6 and Comparative Examples 1-6

[0078]

[0079] Combining Examples 1-6 with Table 3, it can be seen that the dental compositions prepared in Examples 1-6 all have melt indexes above 14.8 g, particularly Example 4, which has a melt index of 27 g. This indicates that the dental compositions prepared in Examples 1-6 all have good fluidity. Furthermore, within a certain range, the greater the amount of polypropylene used, the higher the fluidity of the dental composition. Such dental compositions are relatively easy to manufacture when manufacturing gutta-percha points.

[0080] Combining Examples 1-6 with Table 3, it can be seen that Examples 4-6, respectively, add inert fillers, zinc oxide powders, and other additives to Examples 1-3. Comparing Examples 1 and 4, Example 2 and 5, and Example 3 and 6, respectively, reveals that Examples 4-6 achieve slightly better test results than Examples 1-3. This is because the inert fillers also enhance fluidity and can, together with polypropylene, adjust the fluidity of the dental composition. When the amount of polypropylene is higher, the amount of inert filler can be reduced, while when the amount of polypropylene is lower, the amount of inert filler can be increased. This can be adjusted based on actual conditions.

[0081] Combining Examples 1-6 and Comparative Example 1 with Table 3, it can be seen that the results show that the test results of the commercially available gutta-percha tips are quite different from the test results of the dental composition of the present application, and the fluidity of the dental composition of the present application is significantly improved, indicating that the formula of the dental composition of the present application has made significant technical progress in fluidity compared to the formula of the existing gutta-percha tips, making the injection molding effect of the gutta-percha tips better.

[0082] In conjunction with Example 5 and Comparative Examples 2-4 and Table 3, it can be seen that Comparative Example 2 reduces the amount of polypropylene and uses gutta-percha to make up the difference. Although polypropylene is only reduced by 1g, the fluidity of the dental composition obtained is significantly reduced, with the melt index dropping from 17g to 12.9g, indicating that polypropylene plays a major role in improving the fluidity of the dental composition, and the amount of polypropylene needs to be within a certain range, as too little amount will affect the effect. Comparative Example 3 reduces the amount of dimethicone by 0.5g and uses gutta-percha to make up the difference. Its test results are almost no different from those of Example 5. However, Comparative Example 4 simultaneously reduces the amount of polypropylene and dimethicone, and the fluidity of the dental composition is much lower than the test results of reducing the amounts of polypropylene and dimethicone respectively. The test result is 11g, close to 10.5g in Comparative Example 1, proving that dimethicone can assist polypropylene in improving the fluidity of the dental composition, and that polypropylene and dimethicone work together to enhance the fluidity of the dental composition.

[0083] Combining Example 5 with Comparative Examples 5-6 and Table 3, it can be seen that while the mixing temperature was lowered and increased in Comparative Examples 5 and 6, respectively, the melt index of the dental compositions obtained was slightly lower than that of Example 5. This indicates that temperature during the preparation process of the dental composition can affect its fluidity to a certain extent, and that excessively high or low temperatures are not suitable for preparing a dental composition with high fluidity. A comparison of Comparative Examples 2-4 with Comparative Examples 5-6 shows that, while mixing temperature also affects the fluidity of the dental composition, its effect is not as significant as that of polypropylene or the combined effect of polypropylene and dimethyl silicone oil.

[0084] Comparing Comparative Example 1 with Comparative Examples 2-6 and combining them with Table 3, even if the amount of polypropylene is reduced, or the amount of dimethyl silicone oil is reduced, or the mixing temperature is lowered, or the mixing temperature is increased, although the fluidity of the dental compositions obtained is not as good as that of Examples 1-6, they are all higher than the fluidity of the commercially available gutta-percha tips of Comparative Example 1. This fully demonstrates that the present formulation has the advantage of significantly improving the fluidity of gutta-percha tips. In this way, when only small-sized gutta-percha tips are produced, more precise sizes can be obtained. Moreover, after the fluidity of the material is improved, the requirements for molds and production equipment can be reduced, thereby reducing costs.

[0085] The viscosity of the dental compositions of Examples 1-6 and Comparative Examples 1-6 was tested. Test method: The dental compositions of Examples 1-6 and Comparative Examples 2-6 and the gutta-percha tip of Comparative Example 1 were made into 20 mm × 20 mm × 2 mm raw material samples, which were then melted at 150°C and pressed with a 200 g weight onto a stainless steel surface with a surface roughness of Ra 0.8 and preheated to 150°C for 3 minutes. After cooling, the viscosity was measured using a tensile tester every 4 cm. 2The maximum parallel static friction resistance is used to test the viscosity of the material and the stainless steel surface. The test results are converted into per 1cm 2 The smaller the parallel maximum static friction resistance, the better the viscosity performance of the material.

[0086] Table 4 Viscosity test results of Examples 1-6 and Comparative Examples 1-6

[0087]

[0088] Combining Examples 1-6 and Table 4, it can be seen that the parallel maximum static friction resistance of the dental compositions prepared in Examples 1-6 is all below 6.2N, especially in Example 4. Figure 2 As shown, its maximum parallel static friction resistance reaches 6N / 4cm 2 , i.e. 1.5N / cm 2 , indicating that the viscosity of the dental compositions prepared in Examples 1-6 is very good, and within a certain range, the more dimethyl silicone oil is used, the lower the viscosity of the dental composition. Such dental compositions are easier to demold when making gutta-percha points.

[0089] Combining Examples 1-6 with Table 4, it can be seen that Examples 4-6 respectively add inert fillers, zinc oxide, and other powders to Examples 1-3. Comparing Example 1 with Example 4, Example 2 with Example 5, and Example 3 with Example 6, it can be found that the test results of Example 4 are slightly better than those of Example 1, the test results of Example 2 and Example 5 are comparable, and the test results of Example 3 and Example 6 are comparable. The slightly better test result of Example 4 than that of Example 1 is due to the addition of talc powder in Example 4. While talc powder affects the viscosity of the dental composition, the effect is limited. The addition of silicon dioxide and calcium carbonate in Examples 5-6 does not affect the viscosity of the dental composition. Therefore, inert fillers, zinc oxide, and other powders have little effect on the viscosity of the dental composition. However, talc powder is preferably an inert material, which can improve both the fluidity and viscosity of the dental composition to a certain extent.

[0090] Combining Examples 1-6 and Comparative Example 1 with Table 4, it can be seen that the results show that the test results of the commercially available gutta-percha tips are quite different from the test results of the dental composition of the present application, and the viscosity of the dental composition of the present application is significantly reduced, indicating that the formulation of the dental composition of the present application has made significant technical progress in viscosity compared to the existing formulation of gutta-percha tips, resulting in a better effect of injection molding of the gutta-percha tips.

[0091] Combining Example 5 and Comparative Example 2 with Table 3, it can be seen that in Comparative Example 2, the amount of polypropylene was reduced, and gutta-percha was used to make up the difference. Although the amount of polypropylene was reduced, the viscosity remained the same as in Example 5, indicating that polypropylene had no effect on the viscosity of the dental composition.

[0092] Combining Example 5 with Comparative Examples 3-4 and Table 4, it can be seen that Comparative Examples 3-4 reduced the amount of dimethyl silicone oil used, while using gutta-percha to make up the difference. The maximum parallel static friction resistance of Comparative Examples 3-4 was 15 N and 15.2 N, respectively, which were significantly lower than that of Example 5. This demonstrates that dimethyl silicone oil has the effect of reducing the viscosity of the dental composition and improving the viscosity performance of the dental composition, and the effect is very superior.

[0093] Combining Example 5 with Comparative Examples 5-6 and Table 4, it can be seen that while the mixing temperature was lowered and increased in Comparative Examples 5 and 6, respectively, the viscosity of the dental compositions obtained was slightly higher than that of Example 5. This indicates that temperature during the preparation process of dental compositions can affect their viscosity to a certain extent, and that excessively high or low temperatures are not suitable for preparing low-viscosity dental compositions. A comparison of Comparative Examples 3-4 with Comparative Examples 5-6 shows that, while mixing temperature does affect the viscosity of dental compositions, its effect is not as significant as that of dimethyl silicone oil.

[0094] Comparing Comparative Example 1 with Comparative Examples 2-6 and combining them with Table 4, even if the amount of dimethyl silicone oil is reduced, or the mixing temperature is lowered, or the mixing temperature is increased, although the viscosity of the obtained dental compositions is not as good as that of Examples 1-6, it is lower than the viscosity of the commercially available gutta-percha tips of Comparative Example 1. This fully demonstrates that the present formula has the advantage of significantly increasing the viscosity of the gutta-percha tips, which can improve the lubricity of the material during molding and facilitate demolding, facilitating the manufacture of gutta-percha tip products, thus reducing product production time and increasing output. The ultimate result is reduced costs, while reducing the probability of poor mold adhesion during production, thereby improving the quality stability of production.

[0095] Based on the above test results, dental compositions of Examples 4-6 with higher fluidity and lower viscosity were selected for strength testing along with the commercially available gutta-percha tip of Comparative Example 1. Dental compositions of Examples 4-6 and the gutta-percha tip of Comparative Example 1 were prepared into planar block samples with a thickness greater than 3 mm. The hardness of the dental compositions was tested using a handheld Shore D durometer. A higher hardness indicates better material strength, and the gutta-percha tip is less likely to break or deform during use, particularly for smaller diameter gutta-percha tips.

[0096] Table 5 Strength test results of Examples 4-6 and Comparative Example 1

[0097] Group Example 4 Example 5 Example 6 Comparative Example 1 Shore hardness / D 70 62 65 58

[0098] Combining Examples 4-6 and Comparative Example 1 and Table 5, it can be seen that, compared with Comparative Example 1, Examples 4-6 significantly improve the hardness of the dental composition. Figure 3 As shown, the material hardness of Example 4 reaches 70D Shore hardness. As shown in the test results of Comparative Example 1, the hardness of the gutta-percha tips on the market is mainly around 55-60D Shore hardness. It can be seen that the hardness of the gutta-percha tips obtained by the present application can reach a higher level. Comparing Examples 4-6, Example 4 has the best effect, Example 5 has a relatively poor effect, and Example 6 has an intermediate effect. This is mainly due to the inconsistent amount of polypropylene added. Because polypropylene has a high hardness, adding polypropylene can improve the strength of the dental composition. Within a certain range, the more polypropylene, the greater the hardness and the higher the strength, which is particularly helpful in improving the strength performance of small-sized gutta-percha tips, thereby facilitating their use by doctors.

[0099] The physical properties of the gutta-percha tips of Examples 7-12 were tested. This application conducted relevant tests on the physical properties of the gutta-percha tips of Examples 7-12 in accordance with the pharmaceutical industry standard YY / T 0495-2009 "Root Canal Filling Tips". The test results showed that the size, brand, taper, physical integrity, X-ray radiopacity and other properties of the gutta-percha tips of Examples 7-12 all met the requirements, that is, the products prepared by this application all met the industry requirements. Figure 4 The figure shows the injection-molded tooth gel tip of Example 10. Figure 4 and Figure 1 By comparison, it can be found that the dimensional stability of the injection-molded gutta-percha tip of Example 10 is higher than that of the non-injection-molded gutta-percha tip.

[0100] In summary, the present application adds polypropylene and dimethyl silicone oil to gutta-percha, and uses low-melting-point polypropylene with good biocompatibility to replace part of the gutta-percha. Compared with the commonly used gutta-percha tips that usually contain about 20% gutta-percha, the proportion of gutta-percha is appropriately reduced. At the same time, under the action of dimethyl silicone oil, the fluidity and viscosity of the gutta-percha tips are improved, making the gutta-percha tips conducive to the use of injection molding technology, which can increase production, improve quality and reduce costs. Therefore, the gutta-percha tips prepared by the present application not only have high fluidity, low viscosity and high strength, but also have qualified size grades, tapers, physical integrity and X-ray radiopacity and other physical properties, making them an innovative and unique dental product.

[0101] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A dental composition, characterized in that Including the following ingredients: Gutta-percha, polypropylene, and dimethicone.

2. A dental composition according to claim 1, characterized in that: The dental composition comprises the following raw materials in parts by weight: 5-15 parts gutta-percha Polypropylene 5-25 parts 1-5 parts of dimethyl silicone oil.

3. The dental composition according to claim 1, wherein: The dental composition comprises the following raw materials in parts by weight: 5-10 parts gutta-percha Polypropylene 15-25 parts 3-5 parts of dimethyl silicone oil.

4. The dental composition according to claim 1, wherein: The raw materials further include 4-11 parts by weight of an inert filler, which is talc, silicon dioxide or calcium carbonate.

5. The dental composition according to claim 1, wherein: The raw materials further include 40-65 parts by weight of zinc oxide.

6. The dental composition according to claim 1, wherein: The raw materials also include 5-20 parts by weight of barium sulfate.

7. The dental composition according to claim 1, wherein: The raw materials also include 0.5-3.5 parts by weight of color powder.

8. The method for preparing the dental composition according to any one of claims 1 to 7, characterized in that: The processing steps include: S1: mixing gutta-percha and polypropylene at a mixing temperature of 80-100°C, a rotation speed of 30-60 rpm, and a mixing time of 30-60 min to obtain a colloid; S2: Add the remaining raw materials to the colloid and continue kneading to obtain a dental composition.

9. A gutta-percha point, characterized in that: The dental composition comprises the dental composition according to any one of claims 1 to 7.

10. The method for preparing the gutta-percha tip according to claim 9, characterized in that: The processing steps include: The dental composition obtained after mixing is cut into granules, and then added into an injection molding machine, melted by the injection molding machine and injected into a mold, and then cooled and demolded to obtain a tapered gutta-percha tip.

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